source: fedkit/port_forward.pl @ c6d6c43

axis_examplecompt_changesinfo-ops
Last change on this file since c6d6c43 was c6d6c43, checked in by Mike Ryan <mikeryan@…>, 10 years ago

mass typo in perldoc
nice cut & paste job faber

  • Property mode set to 100644
File size: 3.3 KB
Line 
1#!/usr/bin/perl
2
3use strict;
4
5use gateway_lib;
6
7use IO::File;
8
9use Getopt::Long;
10
11my $ssh_pubkey;
12my $ssh_privkey;
13my $tunnelip;
14my $peer;
15my @ports;
16my $fedkit_dir= "/usr/local/federation";
17my $perl = "/usr/bin/perl";
18my $iface_file;
19my $ssh = "/usr/bin/ssh";
20my $use_file;
21my $ssh_port=22;
22my %opts = (
23    'ssh_pubkey=s' => \$ssh_pubkey,
24    'ssh_privkey=s' => \$ssh_privkey,
25    'tunnelip' => \$tunnelip,
26    'peer=s' => \$peer,
27    'port=s', \@ports,
28    'fedkit=s' => \$fedkit_dir,
29    'perl=s' => \$perl,
30    'ssh=s' => \$ssh,
31    'ssh_port=s' => \$ssh_port,
32    'use_file' => \$use_file,
33);
34
35exit(20) unless GetOptions(%opts);
36
37gateway_lib::read_config(gateway_lib::config_filename(), \%opts)
38    if $use_file;
39
40my $tunnelparam = $tunnelip ? '--tunnelip' : '';
41
42system("$perl -I$fedkit_dir/lib $fedkit_dir/bin/prep_gateway.pl --peer=$peer " .
43    "--ssh_pubkey=$ssh_pubkey $tunnelparam");
44exit(20) if $?;
45
46# Remove dupes from ports
47my %mark;
48@ports = grep(!$mark{$_}++, @ports);
49
50foreach my $p (@ports) {
51    my ($type, $port, $host, $eport) = split(":", $p);
52    $eport = $port unless $eport;
53    if ($type ne "local") {
54        # We will need to resolve this host name.  Make sure we can.
55        if (!gateway_lib::get_ip($host)) {
56            # the short form isn't resovable. Try the full domain that the
57            # portal is in.  If that doesn't work assume the user knows better
58            # and leave $host untouched.
59            chomp (my $hn = `hostname`);
60            (my $try = $hn) =~ s/^[^\.]+/$host/;
61
62            $host = $try if gateway_lib::get_ip($try);
63        }
64    }
65    my $fopt =  ($type eq 'local'  ? "-L" : "-R") . " :$port:$host:$eport";
66    my $cmd = "$ssh -N $fopt -p $ssh_port -o \"StrictHostKeyChecking no\" " .
67        "-i $ssh_privkey $peer &";
68    system($cmd);
69    die if $?;
70}
71
72exit(0);
73
74=pod
75
76=head1 NAME
77
78B<port_forward.pl> - Do ssh service port forwarding.
79
80=head1 OPTIONS
81
82=over 8
83
84=item B<fedkit=>I<install_dir>
85
86Directory in which this software is installed.  Generally not needed.
87
88=item B<peer=>I<hostname>
89
90The other gateway providing forwarding.
91
92=item B<perl=>I<perl_binary>
93 
94Location of the perl binary.  Usually unneeded.
95
96=item B<port=>I<port_spec>
97
98Forward the given port.  Each port is given as type:lport:host:rport where
99type can be "local" or "remote".  These correspont to B<-L> and B<-R> ssh
100port forwarding, respectively.  The remaining parameters are exactly as for
101those parameters to ssh.
102
103=item B<ssh=>I<ssh_binary>
104
105The pathname of the ssh binary.  Unusally unnecessary.
106
107=item B<ssh_pubkey=>I<keyfile>
108
109A public to install as authorized.
110
111=item B<ssh_privkey=>I<identity_file>
112
113The identity to use for remote access
114
115=item B<tunnelip>
116
117True if the testbed uses the DETER tunnelip extension to provide external
118connectivity information
119
120=item B<use_file>
121
122If given read additional parameters from the file in
123/proj/I<project>/exp/I<experiment>/tmp/I<hostname>.gw/conf where those are the
124current testbed project and experiment and the hostname is before the first
125dot.  The file is option: value.
126
127
128=back
129
130=head1 SYNOPSIS
131
132In addition to providing the key initialization and DETER routing setup for a
133gateway without external access as B<active_config.pl> does, B<forward_port.pl>
134forwards the given ports using ssh.  B<forward_port.pl> does not establish low
135level connectivity tunnels.
136
137
138=head1 AUTHORS
139
140Ted Faber <faber@isi.edu>
141
142=cut
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